1200012100124 has 12 divisors (see below), whose sum is σ = 2100149864904. Its totient is φ = 599969281584.

The previous prime is 1200012100109. The next prime is 1200012100247. The reversal of 1200012100124 is 4210012100021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200012100099 and 1200012100108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9118622 + ... + 9249285.

It is an arithmetic number, because the mean of its divisors is an integer number (175012488742).

Almost surely, 2^{1200012100124} is an apocalyptic number.

It is an amenable number.

1200012100124 is a deficient number, since it is larger than the sum of its proper divisors (900137764780).

1200012100124 is a wasteful number, since it uses less digits than its factorization.

1200012100124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18384244 (or 18384242 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200012100124 its reverse (4210012100021), we get a palindrome (5410024200145).

The spelling of 1200012100124 in words is "one trillion, two hundred billion, twelve million, one hundred thousand, one hundred twenty-four".